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Grade 366 Molybdenum vs. SAE-AISI A7 Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is SAE-AISI A7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
190
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 120
72
Tensile Strength: Ultimate (UTS), MPa 580
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Specific Heat Capacity, J/kg-K 210
470
Thermal Expansion, µm/m-K 7.6
12

Otherwise Unclassified Properties

Density, g/cm3 12
7.7
Embodied Carbon, kg CO2/kg material 27
13
Embodied Energy, MJ/kg 340
200
Embodied Water, L/kg 300
100

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 13
29 to 77
Strength to Weight: Bending, points 13
25 to 48
Thermal Shock Resistance, points 18
27 to 72

Alloy Composition

Carbon (C), % 0 to 0.030
2.0 to 2.9
Chromium (Cr), % 0
5.0 to 5.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 0.010
81.4 to 87.7
Manganese (Mn), % 0
0 to 0.8
Molybdenum (Mo), % 66.9 to 73
0.9 to 1.4
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 27 to 33
0.5 to 1.5
Vanadium (V), % 0
3.9 to 5.2